{"product_id":"allstar-performance-rear-main-seal-adapter-86-up-pan","title":"Allstar Performance Rear Main Seal Adapter — Fits 1986-Up Small Block Chevy","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Allstar Performance\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eAllstar Performance is America's leading circle-track racing parts manufacturer. From aluminum panels and chassis components to brake hardware, steering boxes, and oval-track shock packages — every Allstar product is born from sprint car and modified racing experience.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/gNe3kYZuBnU\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eAllstar Performance Rear Main Seal Adapter for SBC\u003c\/h2\u003e\u003cp\u003eBuilding a custom engine often involves mixing and matching parts from different eras. The Allstar Performance Rear Main Seal Adapter is the perfect solution for builders looking to install a 2-piece rear main seal crankshaft into a 1986-and-up 1-piece rear main seal Small Block Chevy engine block. This precision-machined adapter ensures a leak-free seal and proper alignment, allowing you to utilize older, proven crankshaft designs in newer engine blocks.\u003c\/p\u003e\u003ch3\u003eProduct Specifications and Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAllows use of 2-piece rear main seal crank in 1-piece block\u003c\/li\u003e\n\u003cli\u003ePrecision-engineered for a secure, leak-proof fit\u003c\/li\u003e\n\u003cli\u003eDurable construction for long-term engine reliability\u003c\/li\u003e\n\u003cli\u003eIdeal for custom engine builds and performance street applications\u003c\/li\u003e\n\u003cli\u003eSimplifies the transition between different SBC engine generations\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eEngine building requires precision, and using the right adapters is key to a successful project. Allstar Performance is known for high-quality, reliable components that make complex engine swaps easier. This adapter kit is designed to meet the rigorous demands of automotive enthusiasts and professional engine builders alike. By bridging the gap between different Small Block Chevy generations, this part provides the flexibility you need for your performance build. Ensure your engine is built to last with high-quality components from GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Allstar Performance products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/asphalt-tire-book\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance Asphalt Tire Setup Log Book — 50 Sheet Pad\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/circle-track-set-up-book\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance Circle Track Set-Up Book - Chassis Setup Chart\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/tire-log-decals-8pk\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance Tire Log Decals — 8 Pack Information Stickers\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/tire-log-decals-40pk\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance Tire Log Decals — 40 Pack Bulk Information Stickers\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/tire-spoon-24in-straight-w-round-end\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance 24in Straight Tire Spoon w\/ Round End — Steel\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Allstar Performance Rear Main Seal Adapter \\u2014 Fits 1986-Up Small Block Chevy\",\"description\":\"Easily install a 2-piece crank in a 1-piece rear main seal block with this Allstar Performance adapter. 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Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Allstar Performance?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Allstar Performance Rear Main Seal Adapter \\u2014 Fits 1986-Up Small Block Chevy?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Allstar Performance","offers":[{"title":"Default Title","offer_id":41441042563156,"sku":"DNLF_ALL26126","price":132.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/ALL26126.jpg?v=1721504501","url":"https:\/\/ggcracing.com\/en-co\/products\/allstar-performance-rear-main-seal-adapter-86-up-pan","provider":"GGCRACING INC","version":"1.0","type":"link"}